There's a very useful idiom: "The wheels are coming off."
That's not a description of the campaign of President Barack Obama. Yet. But if the past two weeks are any indication, it's time for the campaign to check the lug nuts.
It started a couple of weeks ago when Vice President Joe Biden forced Obama to join him in endorsing gay marriage. The White House - through the campaign staff - tried to pass the word that Biden's statement on a Sunday show was a trial balloon.
When the Earth did not cease spinning on its axis, the...